1888879 has 2 divisors, whose sum is σ = 1888880. Its totient is φ = 1888878.

The previous prime is 1888849. The next prime is 1888897. The reversal of 1888879 is 9788881.

Together with next prime (1888897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1888879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1888849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944439 + 944440.

It is an arithmetic number, because the mean of its divisors is an integer number (944440).

2^1888879 is an apocalyptic number.

1888879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888879 is an equidigital number, since it uses as much as digits as its factorization.

1888879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 49.

The square root of 1888879 is about 1374.3649442561. The cubic root of 1888879 is about 123.6141099227.

The spelling of 1888879 in words is "one million, eight hundred eighty-eight thousand, eight hundred seventy-nine".